Add an integer beyond 64 bit

Author: nurse

spec/mysql2/statement_spec.rb

@@ -68,14 +68,15 @@
   end
 
   it "should handle bignum but beyond int64_t" do
-    stmt = @client.prepare('SELECT ? AS max1, ? AS max2, ? AS min1, ? AS min2, ? AS min3')
+    stmt = @client.prepare('SELECT ? AS max1, ? AS max2, ? AS max3, ? AS min1, ? AS min2, ? AS min3')
     int64_max1 = (1 << 63)
     int64_max2 = (1 << 64) - 1
+    int64_max3 = 1 << 64
     int64_min1 = -(1 << 63) - 1
     int64_min2 = -(1 << 64) + 1
     int64_min3 = -0xC000000000000000
-    result = stmt.execute(int64_max1, int64_max2, int64_min1, int64_min2, int64_min3)
-    expect(result.to_a).to eq(['max1' => int64_max1.to_s, 'max2' => int64_max2.to_s, 'min1' => int64_min1.to_s, 'min2' => int64_min2.to_s, 'min3' => int64_min3.to_s])
+    result = stmt.execute(int64_max1, int64_max2, int64_max3, int64_min1, int64_min2, int64_min3)
+    expect(result.to_a).to eq(['max1' => int64_max1.to_s, 'max2' => int64_max2.to_s, 'max3' => int64_max3.to_s, 'min1' => int64_min1.to_s, 'min2' => int64_min2.to_s, 'min3' => int64_min3.to_s])
   end
 
   it "should keep its result after other query" do